Which receiving antenna accepts radio signals equally from all horizontal directions?

The biconical antenna is designed to receive radio signals evenly from all horizontal directions. Its broad, conical shape allows it to have a uniform radiation pattern, which means it does not favor any specific direction for incoming signals. This characteristic makes it particularly effective for applications where signals can come from various angles or directions.

In contrast, other antenna types have more directional or specific characteristics. For instance, a horizontal antenna is typically more sensitive to signals arriving from a horizontal plane, and a vertical antenna generally receives signals better from the vertical plane. A dipole antenna, while somewhat omnidirectional in the horizontal plane, does not achieve the same level of uniformity across all directions as a biconical does. Therefore, the biconical antenna stands out as the correct choice for receiving signals equally from all horizontal directions.